IC identification JBL Boombox 2

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  • seb68
    Member
    • Apr 2019
    • 44
    • France

    #1

    IC identification JBL Boombox 2

    Hello,
    Can anyone identify this component?
    This is a regulator that receives 24 volts input (pin 5)
    Ground : pin 3 and 4






    Red Circles on the Picture 3: location of IC (same)


    Thank you for your time spent helping
  • R_J
    Badcaps Legend
    • Jun 2012
    • 9514
    • Canada

    #2
    Re: IC identification JBL Boombox 2

    There is another ic to the left of U21, looks like a similar circuit, does it have the same number? or is it different? post it's picture if it is different.

    Comment

    • seb68
      Member
      • Apr 2019
      • 44
      • France

      #3
      Re: IC identification JBL Boombox 2

      1 : IC burn must be changed
      2 and 3 : IC same as number 1

      Comment

      • R_J
        Badcaps Legend
        • Jun 2012
        • 9514
        • Canada

        #4
        Re: IC identification JBL Boombox 2

        Is the top mark |BCSB, it might be a Monolithic Power Systems dc-dc step-down
        for example, here is a MP1495DJ marked |ACSF
        Attached Files
        Last edited by R_J; 03-20-2022, 02:35 PM.

        Comment

        • seb68
          Member
          • Apr 2019
          • 44
          • France

          #5
          Re: IC identification JBL Boombox 2

          You are not far from the truth.
          But i have not found with this top marking any mps.
          Top Mark : BCSB
          Code product : BCS
          B : year code

          Comment

          • SMDFlea
            Super Moderator
            • Jan 2018
            • 20272
            • UK

            #6
            Re: IC identification JBL Boombox 2

            If that first character is a lower case b it could be a custom silergy part.

            As an example,the SY8088I (SOT23-5) has the Top Mark: bPxyz (device code: bP, x=year code, y=week code, z= lot number code
            All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

            Comment

            • R_J
              Badcaps Legend
              • Jun 2012
              • 9514
              • Canada

              #7
              Re: IC identification JBL Boombox 2

              Originally posted by Williamhenry19
              exactly!
              If you quote me don't add shit to the quote.

              Comment

              • SMDFlea
                Super Moderator
                • Jan 2018
                • 20272
                • UK

                #8
                Re: IC identification JBL Boombox 2

                Originally posted by R_J
                If you quote me don't add shit to the quote.
                It was a spammer.Deleted and banned.
                All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

                Comment

                • seb68
                  Member
                  • Apr 2019
                  • 44
                  • France

                  #9
                  Re: IC identification JBL Boombox 2

                  Could this fit?

                  https://www.silergy.com/productsview/sy21154aic




                  On the circuit :
                  Input : 24 volts pin 5
                  Ground : pin 3 and 4
                  Last edited by seb68; 04-03-2022, 03:09 PM.

                  Comment

                  • seb68
                    Member
                    • Apr 2019
                    • 44
                    • France

                    #10
                    Re: IC identification JBL Boombox 2

                    Originally posted by seb68
                    Could this fit?

                    https://www.silergy.com/productsview/sy21154aic




                    On the board :
                    Input : 24 volts pin 5
                    Ground : pin 3 and 4

                    Outpout : pin 6 (LX) (there is a coil in the circuit)

                    Comment

                    • labusas
                      New Member
                      • May 2022
                      • 4
                      • Lithuania

                      #11
                      Re: IC identification JBL Boombox 2

                      Originally posted by seb68
                      Could this fit?

                      https://www.silergy.com/productsview/sy21154aic




                      On the circuit :
                      Input : 24 volts pin 5
                      Ground : pin 3 and 4
                      This one also seems to fit SY8303AIC ?

                      Comment

                      • labusas
                        New Member
                        • May 2022
                        • 4
                        • Lithuania

                        #12
                        Re: IC identification JBL Boombox 2

                        SY8303AIC I mean as the closest analogue.

                        Comment

                        • seb68
                          Member
                          • Apr 2019
                          • 44
                          • France

                          #13
                          Re: IC identification JBL Boombox 2

                          Hello,

                          yes it is the same and it should work

                          Comment

                          • labusas
                            New Member
                            • May 2022
                            • 4
                            • Lithuania

                            #14
                            Re: IC identification JBL Boombox 2

                            Please tell me how to identify Q3 3034_NSAt?

                            Comment

                            • SMDFlea
                              Super Moderator
                              • Jan 2018
                              • 20272
                              • UK

                              #15
                              Re: IC identification JBL Boombox 2

                              Originally posted by labusas
                              Please tell me how to identify Q3 3034_NSAt?
                              Where is Q3 , post some pictures
                              All donations to badcaps are welcome, click on this link to donate. Thanks to all supporters

                              Comment

                              • R_J
                                Badcaps Legend
                                • Jun 2012
                                • 9514
                                • Canada

                                #16
                                Re: IC identification JBL Boombox 2

                                Q3 is in post #3 on the right side of the picture (next to the glue) It looks like a DFN8 3034 seems to be the part number,
                                Last edited by R_J; 05-26-2022, 10:16 AM.

                                Comment

                                • seb68
                                  Member
                                  • Apr 2019
                                  • 44
                                  • France

                                  #17
                                  Re: IC identification JBL Boombox 2



                                  I think he is talking about this component

                                  Comment

                                  • labusas
                                    New Member
                                    • May 2022
                                    • 4
                                    • Lithuania

                                    #18
                                    Re: IC identification JBL Boombox 2

                                    Thanks seb68 for the picture.
                                    Yes. Exactly this one.
                                    Last edited by labusas; 05-30-2022, 07:15 AM.

                                    Comment

                                    • Goiano.sa
                                      New Member
                                      • Sep 2016
                                      • 1
                                      • Brasil

                                      #19
                                      Re: IC identification JBL Boombox 2

                                      I would like to know what voltage this power supply generates, 3V or 5V?

                                      Comment

                                      • seb68
                                        Member
                                        • Apr 2019
                                        • 44
                                        • France

                                        #20
                                        Re: IC identification JBL Boombox 2

                                        Several supply lines from 24 volts :

                                        5 volts
                                        3.3 volts

                                        maybe 1.2volts and 12volts but i don't remember.

                                        Comment

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